Morphological behaviour, electronic bond formation and electrochemical performance study of V2O5-polyaniline composite and its application in asymmetric supercapacitor

Journal Article · Thu Nov 15 00:00:00 EST 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.08.013· OSTI ID:22805321

Roy, Atanu; Ray, Apurba; Sadhukhan, Priyabrata; Saha, Samik; Das, Sachindranath ^[1]

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1. Department of Instrumentation Science, Jadavpur University, Kolkata, 700032 (India)

Highlights: • Interlinked V{sub 2}O{sub 5}-PANI composites are synthesized by chemical polymerization. • V{sub 2}O{sub 5}-PANI exhibits the highest capacitance of 529.56 F g{sup −1} with wide window of 1.6 V. • Correlation between electrochemical performances with IR peak shifts is studied. • Inorganic-organic synergistic effect plays crucial role for wide working window. • Asymmetric supercapacitor exhibits high energy and power in wide potential windows. - Abstract: To meet the demand of high-energy density supercapacitors, development of suitable electrode material with a wide potential window and high specific capacitance is most important. In this report, we have synthesized V{sub 2}O{sub 5}-PANI nanocomposite through in-situ intercalation and polymerization reaction of aniline with V{sub 2}O{sub 5}, which shows a wide potential window as well as high specific capacitance. XRD, SEM and FTIR have been used to characterize the electrode materials. Their electrochemical activity and pseudocapacitive performances were investigated. The correlation between morphology and electrochemical performances were investigated which is a vital way for the selection of electrode materials. Due to the organic-inorganic compatibility, V{sub 2}O{sub 5}-PANI exhibits good electrochemical charge storage in a wide potential window of 1.6 V (ranging between −0.4 V to 1.2 V) with excellent stability of 84.2% capacitance retention after 5000 GCD cycles. Moreover, asymmetric supercapacitor was assembled V{sub 2}O{sub 5}-PANI composite and NiMn{sub 2}O{sub 4} electrodes which yield remarkable energy and power density.

• OSTI ID: 22805321
• Journal Information: Materials Research Bulletin, Vol. 107; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ANILINE
CAPACITANCE
CAPACITIVE ENERGY STORAGE EQUIPMENT
CLATHRATES
COMPOSITE MATERIALS
ELECTROCHEMISTRY
ELECTRODES
ENERGY DENSITY
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
MORPHOLOGY
NANOCOMPOSITES
POLYMERIZATION
SCANNING ELECTRON MICROSCOPY
VANADIUM OXIDES
X-RAY DIFFRACTION